Training for a "century" is not like training for a marathon. Because of the low impact of cycling, you can train at a faster rate because your recovery time is almost over night. I did one two-day "double century" from Austin to Dallas, and I felt better the second day. Go figure... It's been a while (early '90's), but we rode 250-300 miles a week to train for a "fast" century. To me, fast was in the 4:30 area. HHH is not a good ride to try to set a speed record on. It's way too unpredictable, and there were years we rode it in 105* with 8000+ people. The "Waco Wild West" century was a good one, and Waxahachie had a "Tour d' Flowers" that was pretty good, too.
CHL holder and Conservative...AKA "Domestic Terrorist"